Patents by Inventor Florian Kofferlein

Florian Kofferlein has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and device for controlling the time at which the toner concentration is measured in a developer mixture containing toner and carriers, and corresponding printer or copier
    Publication number: 20060099000
    Abstract: In a method or apparatus for control of a point in time of a measurement of toner concentration in a developer mixture comprising toner and carrier, and wherein the developer mixture is mixed by a bucket roller provided with buckets, a toner concentration sensor is arranged for measurement of the toner concentration. Magnet bars are provided on the buckets, which magnet bars are interrupted in a region of the toner concentration sensor except for one of the magnet bars which is uninterrupted. The toner concentration sensor emits a sensor signal that exhibits a first pulse-shaped spike upon passage of the uninterrupted magnet bar and which has a larger amplitude compared to further pulse-spikes of smaller amplitude upon passage of the interrupted magnet bars. The sensor signal indicates the toner concentration between the pulse-shaped spikes.
    Type: Application
    Filed: February 6, 2004
    Publication date: May 11, 2006
    Inventors: Stefan Franzl, Florian Kofferlein, Stefan Krieger, Peter Mostl, Alfred Zollner